Improving Safety at Intersections Controlled by Traffic Signal Lights
The purpose of the following research was to determine whether conspicuity of an illuminated traffic signal lens could be increased with a modulating incandescent light source. Experiments were conducted both in the laboratory and a controlled field setting under normal and degraded viewing conditions using both static and dynamic testing situations. Four experiments are reported here. There were four other experiments conducted which are not reported here. Some of these served as the basis for later studies.